Themed Duel Arena?

This is something that we at RDA are doing. Basically we choose a duel theme for the week and everyone can follow that theme for the arena duel. Following that gives a DP bonus as well(like both get DP 20 each) (example: light vs darkness) What do you guys think?

I don't understand...can you explain a little bit more ?

Yeah sure. So basically everyone would follow a duel theme in the duel arena. The theme would change weekly and following this them(which would be optional) would award extra DP as well as be kind of fun. I mean how often does someone get to set up themed duels like plants vs zombies? ;D Also the deck the person uses must only use cards related to the archetype they are using or cards that have effects related to that archetype (EX: Black Rose dragon has an effect for plants so u could use it in a plant deck)